Well since there are a lot of posts about this I might as well throw in my own opinion.
1) these packs are a fantastic idea to assist all players who are willing to spend a little money to support Capital games so more content can be created.
2) this does affect all areas of the game. And I can understand the frustration that some people are feeling,
However these bundles can effectively be classed as Legacy they still require players to go the final few steps required and also do not include Zetas, omnicrons or Mods that players further into the game have developed into their rosters.
New players are given a chance to buy in with a firm foundation for 2 Legacy GLs that can help assist newer guilds and get them some good rewards in their progression.
Mid players who might not have paid attention to GLs like Rey or SLKR due to their old content vibe or dislike for the characters themselves are given an opportunity to obtain these for a price of paying money, but they will still need to do the final leg work and do all the mods.
Later game players that have these toons already may not get anything from these packs as they already have almost all characters at or above these values, but to go with that they already have all the Zetas, omnicrons and High end mods required for competitive gameplay and in terms of Rey they will probably also hold Ben Solo who is needed to bring the team to full fruition and zorri for the left overs.
So there are a few downsides moving up the list but they can be seen as negligible in terms of the benefits.
3)Cost
Well this is a tough one as there was a total of 4 packs.
Here is the real clincher Legacy Vs Relevant
The Rey and SLKR toons Obtained Via the packs can be classed as Legacy due to the reduced Gear Demand known as Kryo gear
Compared to the Starkiller toons which will be classed as relevant due to kryo requirements.
In terms of the cost of such packs I feel the StarKiller pack was a touch Expensive, however taking into effect the time the toons have been available it falls within what I would deem an acceptable range.
The Rey and SLKR packs fall into the lower end of their range as super great value